Engine-cylinder.



A. W. GUSTAFSON.

ENGINE CYLINDER.

APPLICATION FILED SEPT. 24. 1912.

1, 1 05,423. Patented July 28, 1914.

, NL ATTORNEYS A. W. GUSTAFSN.

i ENGINE CYLINDER. 1,1 05,423.

APPLICATION FILED SEPT.24,1912.

Patented July 28, 1914.

2 SHEETS-SHEET 2.

ATTORNEYS narran safaieswiaivr opcion.

ALBERT WILLIAM GUSTAFSON, OF JERSEY CITY, NEW JERSEY.

ENGINE-CYLIN DEE.

To all 'whom it may concern Be it known that I, Amann VtLmAM GUS-'mrsox, a citizen ot' the United States, and` a resident ot' JerseyCity, in the county of .Hudson and State of New JerseyP have invented anew and Improved Engine-Cylinder, of which the following isa full,clear, and exact description.

Among the principal objects which the present invention has in view are:to prevent loss of heat in the expansive medium employed by the engine;to automatically create and maintain a jacket of rarefied airsurrounding the chambers containing the expansive medium; and tosimplify the construction of the apparatus whereby the above-statedobjects are obtained.

Reference to be had to the accompanying drawings forming a part of thisspecification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is a longitudinal vertical section ot' a steam cylinder andchest therefor, taken on the line 1-1 of Fig. 3, and showing inconjunction therewith a locomotive boiler and supporting saddletherefor; Fig. 2 is 1a horizontal section of the steam chest, taken onthe line 2-2 in Fig. 3; Fig. 3 is a vertical cross section, taken on theline 3-3 of Fig. l; and Fig. 4 is a detail view showing in elevation oneof the spool heads of the piston valve employed in conjunction with thepresent invention, and a section of the tubular form ot the piston rodused therewith.

As seen in the accompanying drawings, the steam chest 9 and the cylinderl() are infolded by an annular space 11 which in the operation of theinvention serves as a jacket for the said chamber and cylinder. 'lhewidth ot'` the jacket 11 is optional. depending on the taste or desiresof the designer or owner. The jacket 11 is connected with the suctionchamber 12 by passages at both sides ot' the partition plate 14.

'lhe plate 14 is centrally provided with a boss l5 which is bored toprovide` the run' way lo for the tubular section 17 o1 the valve pistonrod 1S, It is upon the section 17 that the heads l5) 'forming the spoolvalve are mounted. The section 17 is also sup- -ported in a runway 2Oformed in the boss 21. 'lhe borings of the bosses l5 and .31 areaio-axial. It is preferred to construct the section 17 integral with theheads 1). and, where the design admits` with the rod 18.

'.Specitcaton of Letters Patent.

Application nld September 24, 1912.

Patented'J 1115T 28, 192141.

serial No. 722,022.

The boss 21 is projected from the inner face of the head 252 of thesteam chest 9. The usual packing gland 23 is employed on the head 22through which the rod 1S extends.

[hc section 17 is made hollow and opened at one end to provide an outletfor the exhaust steam or gases. For this purpose the ends of the tubeare provided with passages 2l, said passages being so disposed as topass within the bosses 15 and 21 respectively and alternately. 'When thesaid passages are drawn without the said bosses they open communicationwith the steam chestl and the tube 17. .The tube 17 then acts as a ductfor the exhausting medium. delivering' the same through the passage Q5in the chest head 26 to the exhaust pipe 27, which then conveys thesteam or gas to the exhaust nozzle 28 (see Fig'. 3).

By the operation `of the spool valve having heads 19, the steam supplyduct 29 is alternately placed in communication with the ducts 30 leadingto thc ports 3l. of the cylinder 10. Simultaneous with the exposure ot'either one of the ducts 230 to the duct 29, the other one of the saidducts is exposed to the chamber of the steam chest 9 to exhausttherethrmlgh from the expanded side of the cylinder l0. The movement ofthe head 19 ot' the steam chest valve to open the duct 30 to the chestwithdraws the'sec tion 17 from the bosses 15 or 21. as the case. may be.to open communication between the exhausting,r portion of the steamchest to the exhaust pipe 27.

I employ the rush of the escaping exhaust steam or expansive medium toestablish and maintain a rarefied atmosphere or partial vacuum in thejacket 11. This is accom- 'plished by limiting the passage 16 to providea space between the end ol the same and the interior end of the bosshaving the passage 2.3 of the head 26. rl`he end of the passage 25 isflared. as secu best in Fig'. 1 ot the drawings. to form a bell mouth toreceive the conical outer end of the casting' forming the partition 14and boss 15. rl`hc cap or space betw n the conical end of said castingand the bell mouth 32 of the passage .5 constitutes an ejector whichoperates 1o form a suction in the passage between the conica] end andbell mouth, operating to draw from the suction chamber 12 the expansivemedium or gas therein. Said chamber being in direct communication withthe jacket 11 operates to withdrav.Y

gas and air from sai Cherubs?, reieier'ng the atmosphere rereiied. 0rfurnishing partial vacuum Within sai Chamber'. Th inner Wsii and outerWall of the iaee; l' being thus separa/eed, end, hs stmosmiiere of theintervening; specs being rareied, heat transmission from 'the to theouter Wall is negligible Further, he rere- 'aetion of the atmospherewithin the jacket l1 materially avoids transmission from be inner wellof the cylinder and steam Chess, 'and thus conserves the heat of `thesei. inner wall and the mec'lium Within the seid sylinder and chest.

It is readily understood that as the pisqon valve is operated by 'helinks, the steam is admitted successively to opposite sides of thepiston 33 anc-1%() the opposite ends Gf the cylinder i0, to be exhaustedfrom the desd steam side of the piston to the chest 9 and from the samethrough he tube 17 to maisg tain a constant suction wt theA Cep beweenthe passages 16 and 25 to ir-sw the atmos phere from the suction chamberl2 and. the jeeket l1. 111 ibis marmer s constant, e-

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gres of rarefeetiei in the jewelry l, insulating ber Jy @he chest 9 andeyunder l) fr m prie-fe.

fevng thus ees-erified my invention, eieim as riew sind cesire ts secureby Le;- tes Faiient: o

y eembinaoi' with sii engine eyiinder e heiiow weil te forni an airjgacket ierssif cylinder; e, reeiprecestiiig Vaive a neiiow valve redheaving; an opening ie receive the exhaust fsm saisi eyimer; 'fan' eX-heust pipe spaced rom seid 'Valve rod to form an -injecoij gap; and echamber surrounding said gap open communica,- on wish the @is spesesurrounding said SLL 'eyiindein in testimony whereof, have signed myneme o this spec 15W@ subscribing Witnesses.

ALBERT WELMMI GS'AFSNQ `gJ'itiiesses JQHN WALL, FRANK Mssorim.

.ri'suiiding atmosieeaisii in the presence of

